Convert FBX to OBJ Online
Convert Autodesk FBX (Filmbox) files to Wavefront OBJ, entirely in your browser. No upload, no sign-up. Your files never leave your device.
Drop your FBX file here
or click to browse from your computer (up to 100 MB)
Medieval lantern with dark iron, bronze accents, and warm glass — multi-material FBX model for format conversion testing.
OBJ is one of the oldest and most widely supported 3D formats. Nearly every modeling, rendering, and CAD application can import OBJ files without plugins.
OBJ files are ASCII text, making them easy to inspect, parse, and process with scripts or custom tools.
Materials from the FBX are mapped to a companion .mtl file, preserving diffuse colors, texture references, and basic material properties.
Also convert from FBX
Other ways to get OBJ
How to Convert FBX to OBJ
Extract geometry and materials into the most widely supported 3D format.
Upload FBX
Drag and drop or select your .fbx file. FBX bundles geometry, materials, skeletal rigs, and animations into a single file.
Processing
Conversion runs entirely in your browser. Meshes and materials are extracted from the FBX and written to OBJ and MTL files. Animation and rig data are not carried over, as OBJ is a static geometry format.
Download OBJ
Get your ready to use ZIP archive containing the .obj geometry file and the .mtl material file. Import them together in any 3D application.
Why convert FBX to OBJ?
FBX is a proprietary format originally developed by Kaydara and now owned by Autodesk. It excels at storing complex scene data including meshes, materials, skeletal rigs, and animations. However, its proprietary nature means that some tools struggle with FBX import, and the format carries complexity that is unnecessary when you only need static geometry and materials.
OBJ, developed by Wavefront Technologies in the late 1980s, is the most universally supported 3D interchange format. Its ASCII structure makes it readable by virtually every 3D application, CAD tool, slicer, and rendering engine. When your workflow does not require animation or skeletal data, converting FBX to OBJ gives you maximum compatibility. The output includes a .mtl companion file that preserves material definitions and texture references.
Key advantages of OBJ over FBX
OBJ is recognized by virtually every 3D modeling, rendering, and CAD application.
OBJ files are plain text, making them easy to inspect, parse, and edit with any tool.
Reading OBJ requires no vendor specific library, unlike FBX which depends on Autodesk's SDK.
Without animation or rig data, OBJ files focus on geometry and stay compact.
The plain text structure makes OBJ easy to generate and transform with custom scripts.
The OBJ format has remained unchanged for decades, so files written today will open in any future tool.
FBX vs OBJ
| Feature | FBX | OBJ |
|---|---|---|
| File structure | Binary or ASCII (single file) | Text .obj + .mtl + textures |
| Animation | Full skeletal, morph, keyframe | Not supported |
| Materials | Phong/Lambert | Phong/Lambert (similar) |
| Scene hierarchy | Full node tree | Flat groups only |
| Textures | Can be embedded | Always external files |
| Geometry | Polygons, NURBS | Polygons (quads and triangles) |
| Specification | Proprietary | Open (de facto standard) |
When to Use Each Format
Use FBX when
- You need animations, rigs, or a full scene hierarchy
- Working in the Autodesk ecosystem or with game engines
- The file contains multiple animation clips
- You want embedded textures in a single file
Use OBJ when
- The target tool only reads OBJ (many legacy and CAD programs)
- You need a text format you can parse with scripts or inspect by hand
- Only the static geometry matters, not animation or hierarchy
- Maximum interoperability across diverse software is the goal
Known Limitations
All animations (skeletal, morph targets, keyframes) are discarded completely
Scene hierarchy is flattened. Parent/child node relationships become flat OBJ groups
Embedded textures in the FBX are extracted to external files alongside the .mtl
NURBS surfaces in the FBX are tessellated to polygons during conversion
FBX to OBJ FAQ
Can I keep my FBX animations when converting to OBJ?
No. OBJ is a static geometry format with no animation support at all. The converter exports the geometry from the default or bind pose and discards all animation data.
Will materials transfer correctly?
Generally yes. Both formats support Phong shading with ambient, diffuse, and specular properties. The .mtl file will reference the original texture images, which are extracted alongside the .obj file.
Why does my scene hierarchy disappear?
OBJ only supports flat groups (using 'g' statements), not hierarchical node trees. Nested objects in your FBX become top-level groups in the OBJ, losing their spatial relationships.
Will the file size increase or decrease?
For geometry-heavy models, the OBJ will likely be larger because it stores data as ASCII text. A 10 MB binary FBX might produce a 30 to 50 MB OBJ. However, materials and embedded textures are handled separately in the .mtl and image files.